+static clib_error_t *
+vnet_hw_interface_change_mac_address_helper (vnet_main_t * vnm,
+ u32 hw_if_index, u64 mac_address)
+{
+ clib_error_t *error = 0;
+ vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
+
+ if (hi->hw_address)
+ {
+ vnet_device_class_t *dev_class =
+ vnet_get_device_class (vnm, hi->dev_class_index);
+ if (dev_class->mac_addr_change_function)
+ {
+ error =
+ dev_class->mac_addr_change_function (vnet_get_hw_interface
+ (vnm, hw_if_index),
+ (char *) &mac_address);
+ }
+ if (!error)
+ {
+ ethernet_main_t *em = ðernet_main;
+ ethernet_interface_t *ei =
+ pool_elt_at_index (em->interfaces, hi->hw_instance);
+
+ clib_memcpy (hi->hw_address, (u8 *) & mac_address,
+ sizeof (hi->hw_address));
+ clib_memcpy (ei->address, (u8 *) & mac_address,
+ sizeof (ei->address));
+ ethernet_arp_change_mac (vnm, hw_if_index);
+ ethernet_ndp_change_mac (vnm->vlib_main, hw_if_index);
+ }
+ else
+ {
+ error =
+ clib_error_return (0,
+ "MAC Address Change is not supported on this interface");
+ }
+ }
+ else
+ {
+ error =
+ clib_error_return (0,
+ "mac address change is not supported for interface index %u",
+ hw_if_index);
+ }
+ return error;
+}
+
+clib_error_t *
+vnet_hw_interface_change_mac_address (vnet_main_t * vnm, u32 hw_if_index,
+ u64 mac_address)
+{
+ return vnet_hw_interface_change_mac_address_helper
+ (vnm, hw_if_index, mac_address);
+}
+